Improvement in lamps



A. KAESTNER.

Lamo Burner.

y Patented Nov.A 5, 1861.

v. Mms

Inl/e ntar.' 9M-@ rl. PrERS. Phom-Lmmgmphon wasmngwn. u. c4

UNITED STATES PATENT OEEICE.

AUGUST KAESTNER, OF NEW YORK, N. Y.

IMPROVEMENT IN LAMPS.

Specication forming part of Letters Patent No. 33,649, dated November 5,1861.

To all wwnt it Huey concern,.-

Be it known that I, AUGUST KAESTNER, of the city, county, and State ofNew York, have invented a new and Improved Lamp; and I do hereby declarethat the following is a full, clear, and eXact description of the same,reterence being had to the annexed drawings, making apart of thisspecification, in which- Figure l is an external View ot' Iny invention.Fig. 2 is a vertical central section of the same, taken in the line a:as, Fig. l.

Similar letters of reference indicate corresponding parts in the twogures.

The object of this invention is to obtain a lamp for burning coal-oilwithout a glass chimney and with a good illuminating-dame.

The invention consists in the employment of acertain combination andarrangement of parts hereinafter described to promote proper combustion.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A represents the base of the cap, which is screwed into the top of thelamp, as usual. On this base A there is a tube B, which is of equalwidth at two opposite sides a a, the other two sides b being of taperform, as shown in Fig. 2. A

The tube B extends a short distance above the wick-tube C, and thelatter is fitted permanently in the cap, the wick being raised andlowered by the ordinary serrated wheels D. The upper end of the tube Bhas a slotc made-in it. This slot extends down at each side of the tubeB, as shown in Fig. 2, the lower part of the slot at each side of thetube being wider than the upper part.

The tube B is perforated at its lower part with a series of quite largeholes (l. These holes extend entirely around the tube B, and at theupper part of the tube, in the sides a a., there are made small holes e,which are in one or more horizontal rows. These holes e admit of smalljets ot air directly to the base of the ame, the jets impinging againstthe Haine at the top of the wick, while the air that passes through theholes d is heated in passing upward and supplies the flame with a volumeof warm air. An excess of cold air would cool the flame and preventpropercombustion; but the cold air admitted through the holes e, beingin fine jets, does not cool the dame, and it compensates for thecomparatively sluggish Inovement of the ascending raretied air below.

The top of the wick-tube C extends but a triie above the base of theslot c, as shown in Fig. 2,and air is admitted to the fiame at each sideof the slot c. The arrangement, it will be seen, is an exceedinglysimple one, and a good illuminating-flame is obtained without anydisagreeable odor being evolved.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The combination of the tube B, taper slot c, large perforations d, andhorizontal ranges ot small perforations, all constructed and arranged inrelation to each other and to the wick-tube O, in the manner and for thepurposes explained.

AUGUST KAESTN ER.

Witnesses:

JAMES LAIRD, M. M. SToMProN.

